Dehydrating press



Jan 6, 1931.

H. M. HALLS ngmnnume :PRsss Filed Oct. 1.' 1925 S-Sheets-Sheet. a V

INVENTOR, A W 17a 2Z5 BYY ' 7 ATTORNEY" Patented Jan. 6, 1931 ire rare HENRY M. HALLS, or ros anennns, oanrronnra DEHYDRATING rREss Application.filelflctoher 1, 1928, Serial no.so9,621.-

This invention relates .to presses and more especially to dehydrating presses and more particularlyto press structures of the character involving upper and lower endless trav g elling belt means.

It is the general object of the present invention to provide a highly effective and 'sturdily built endless beltpress for the economical and thorough expression of'liquid imiirom various materials in a continuous operation and by which the residue is ejected from the machine.

Another object is to provide for the ready adjustment of cooperative presser and platen r belts as required according to the character ofmaterial being treated.

An additional object of the invention is to provide cooperative belt means and a practlcal restr1ct1ve guide for the belt means. I

A further object is to provide a platen belt presenting a substantially plane efiective bearing face and which is composed of links of such form and arrangement as to provide ample drain spaces. And in this connection an object is to .provide a stationary system of rollers supporting the eliective plane stretch of the belt. Also an object is to provide a draining, platen belt whoselinks are self-cleaning.

A purpose is to provide an endless presser belt whose links are formed and arranged to present a practically imperferate presser face throughout ior'the' eliicient application of pressure to a batch of material :being treated,and further a purpose is to provide a stationary system of rollers which take the reaction thrust of the efifectiveportion of the presserb elt. v

A further purpose of the invention is to providela simple,practicable, and substantial endless travelling strainer mat for a press of this character.

Additional objects, advantages and fea- 5 tures of construction of thecombination Will be mademanifest in the ensuing description of the herewith illustrative embodiment of the apparatus; it being understood'that modifications, variations and adaptations may beresortecl to. within the spirit, scope and principle of theinvention as itismore directly-claimed hereinafteno s Figure his a side elevation partly in section, of the press.

Figure '2 is an elevation, partly in section, of the driving end of the press.

Figure 3 isa detail .sectionof a portion of the platen belt and its side-wall. V I

l igure 4 is a side elevation of the sidewall. 1

Figure 5 is a side elevation and partial section ofportions of the upper and lower belts andtheir supporting rollers.

Figure 6' is a sectional detail of a roller and its bearing,-.for an upper roller, and

Figure Tis a side elevationof airagment of the bearing; 1 1 Y *igure Sis a detail section or" thebearing of a lower roller, and 7 V Figure 9 is aside elevation ofa fragment of the bearing.

, Figure 10 isj an-elevation of a pivot rod lock device and associated'belt member.

Figure 11 is a cross section of the pivot rod and bearing shims;

Figureil2is an axial section and plan of the pivot rod rock means.

Figure 13 is a side-elevation of a fragment ofthe upper or presser belt.

Figure 14 is abottomface view of assembled links of thepresser belt Figure '15 is -a cross-section ofone of the presser links.=- v

Figure-lfiis-a top face viewof a group of links of theplaten.

a 1 Figure 1 7;is a sectional view ofa tumbler pulley showing in elevation the bend of links of the platen and the applied'strainer mat.

- I Figure 18 is a view showing an end elevaftion and a section-10f; twin links of the platen. Figure 1 9,is-a plan of the improved strainer-mat. p p I Figure 20- is a cross-sectionof themat. FigureQl is a longitudinal section of a fragment of the mat. o

The (operative mechanism is supported-in andupon aflsuitable substantial frame 2 including corner legsand longitudinal beams and cross-girders 4 .the frame journalling. a driven shaft 5 having; a pinion Gengaging a lug 17 whose top face is in the lower gear 7 fixed on a cross-shaft, 8 and meshing with an upper gear 9 fixed on a head shaft'lO hung in bearings 11 on top rails 3 of theframe. I V l i The shafts 8 and are provided with tumblers 12 one above the other and from the lower tumbler 12 there extends and is driven an endless platen belt 13 composedof staggered gangs 14 and 15 of links 16. These links are duplicate and each presents a flat top edge P and each provided with aside plane of the top edge or face'P. r

The lug 17 is approximately triangular in form with its sides converging toward the center and each link 1s provided with an end horn 19 havinga top" facet 20 so disposed that when the link turns 'on its pivot rod 21 this facet movesup into the planeof face P.

- This is for the purpose'of dislodging any accretion on the side of the link from under a strainer mat M, Flg. 17'; the horn 19 sweepmg up close to the near end or corner of an adjacentlug 17 The dislodged material is indicated at X between a li ing horn 19.

When the group 1g 17 and the actof links is passing in a plane stretchfrom tumbler 12 to the far tumbler 12 the corners of each lug 17 are so spaced from the near facets 20 that ample are diametrically opposite with the result that end pull onthe links is taken by the shims which can be readily replaced when unduly worn. Means are provided to preventrotation of'the pivotrods 21 with the shims 23 and this includes a washer 24 having anon-circular aperture presenting a fiat face 25 matching the reduced flattened end of the rod 21 which extends through an outer link or wall plate (later described) which has a wedge lug 27 adjacent each end.

When the links, as 16, are strung on the pivot rod 21 the sides of the belt are closed j by high side guard plates 30 certain of which have the lugs 27 referred to 'on outer" faces and the'washers 24 are then applied to the ends of the rods sothat notches24 in the washers slip over the ends of the lugs 27. This locks the washers against rotation'and they in turn lock the rods 21 against turning. Cotter pins .31 pass through the ends of the pivot rods 21andare jammed on the wedges toiretain the washers 24;

V Passing from upper tumbler forward to i and over a remote tumbler 12 is the upper effective presser belt 32. This is composed of staggered gangs 3334, Fig. 14, of links 35 mutuallypivoted on pivot rods 21* which are of similar structure to pivot rod devices 2123. These links have fiat pressure edge faces P with longitudinal, edge building ledges 36 bridging the gap between ends-of links 35 of nextgangs, so as to form a substantially closed'eifective pressure face when the links come into a common plane during action on materlal A. 1n the press. The presser belt'32 is of a width to pass withworking clearance into place over the 'platenbelt 13 and'between the side, restrict- 41,,secured on the frame members 2 and have a top bar 42 together forming individual journals for theroller ends.

An oil channel 43 opens to the top of the bar 41 and is closed-by a cap strip 44; the rollerends hang exposed in thechannel forlubrication of the bearing surfaces.

The presser belt 32 has a roller system support including rollers 46 whose ends are. respectively journalled' inside leak-proof bearings each including a top bar 47 secured to an adjustable backing frame 48. A bottom box bar 49 is attached to the bar 47 face to face between roller ends. The bars have opposite, matched mortise lips 5051 within which is an oil chamber 52 in which the roller ends are exposed.

These improved roller-end bearings are for the purpose of reducing oil leakage into the product passing from the press.

The upper roller frame or carrier is hung by rear trunnions 55 which are journalled in brackets 56 having screw stems 57 passing freely through lugs 58 on posts 59. The carrier'brackets 55 are adjusted to determine the spacing of the rear end of the belt 32 above the platen belt 13 and is then set by the nuts 60. The lower ends of the brackets 56 are clamped by bolts 61 in adjusted position.

The forward end of carrier frame 48 has trunnions' 62 and these are mounted in brackets 63 adjustable on and secured to posts 64.

The tumbler 12 is mounted on a shaft 65 having adjustable journals 66 to permit adjustment of the carrier 48 with its rollers 46 to the desired height and feed angle opening over the platen.

The tumbler 12 is likewise adjustable by sliding journals 67 carrying its shaft 68.

Preferably the presser belt 32 is overlaid by a snug impervious or liquid proof rubber or other sheet 7 0' to prevent the liquid ex: pressed from the material A from working into the upper belt, fabrication, as far as possible.

It is desirable that the material A be supported ona plane, pervious mat which will not pack unduly into the channels .0 of the platen belt and will not crumple .or fold in ridges laterally or longitudinally on the platen. I

A preferred form of bed or mat is shown in Figs. 19, 20 and 21 and consists of strong, fiber selvage ropes 7 5' and intermediate warp cords 76 laid in pairs one over and under cross-cords 77 over-bound on the selvage ropes. Means are incorporated in the mat weave to transversely stiffen the body and consists of small wire rods 78 lying beside the cords 77 and having their ends wrapped on the ropes 75. Thus if a wire breaks it still is tied to the selvage rope.

A protective deck 80 is secured in the carrier 48 to effectually cover the roller system and lower part of the presser belt.

. It will be seenthat the press can be readily adjusted to effectually compress the material A to express its liquid and ,willoperate continuously as material is introduced into its feed end F or open mouth and will quickly perform the relative drying or dehydrating process.

The adjustable carrier has adjustable stay braces 48* attached to the main frame toincrease its rigidity.

An advantage of the wear shims on the 'ivot rods is that while they cannot be lubricated, in view of thenature of the duty, they can be readily renewed from time to time. 1

The selvage of the strainer mat is preferably bound with a rubber impregnation 7 5 The bearing strip 49 is shown in Fig. 7 as divided at 49' into sections of suitable length so that each will support a small number of the rollers which can be removed without disturbing the others.

What is claimed is:

1. In a dehydrating press, a platen belt composed of inter-staggered links set parallel and having side spacing lugs with top faces in the top plane of the belt and which links have end horns movable toward the lugs and having expression facets to register with the top plane of the belt when going around a tumbler, and a strainer mat enveloping the platen belt, said horn operative to express undize accretions from the link spaces adjacent to the endsof the side lugs-and under the mat.

2. In a dehydrating press, a platen link belt with staggered gangs of links, pivot rods on which near ends of the gangs of links are pivoted, said links having side lugs bridging the space between companion twin links and which terminate short ,of the contiguous ends of next gang links so as to form drain channels in the platen face of the belt and expression horns movable into the effective plane of the belt. 1

3. In a dehydrating press, a platen link beltwith staggered gangs of links, pivot rods on which near ends of the gangs oflinks are the space between companion twin links and which terminate short of the contiguous ends of next gang links so as to form drain channels in the platen face of the belt; the links having horn ends registerable with the top faces of side lugs. I

4. In a dehydrating press, a platen device, and a presser belt operative thereover and a supporting frame for said belt, and means for adjusting the frame and including side'trunnions on the frame, adjustable brackets, for

said trunnions, having screw ends, hangers for said ends, and nuts for setting the bracket endsin the hangers.

5. In a dehydrating press, a platen device, and a presser belt operative thereover and a supporting frame for said belt, and means for adjusting the frame and including side trunnions on the frame, adjustable brackets, for said trunnions, having screw ends, hangers for said ends, and nuts for. setting the bracket ends in the hangers, andadjustable tension brackets at the medial side parts of the said frame and including links pivoted at their lower ends'to the frame and having upper ends hung in a slotted bracket tofacilitate disconnection.

HENRY M. HALLS.

80 pivoted, said links having'side lugs bridging 

